The extent of water mobility within biological tissues can be quantified by a parameter called the apparent diffusion coefficient (ADC).

水在生物组织内的流动程度，可以由一个被称为表观扩散复合系数（ADC）的参数去量化之。

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The coefficient of Hall-effect decided by experiment can determine the type of semiconductor materials, the concentration of carrier, the mobility of carrier and other important parameters.

通过霍尔效应实验测定的霍尔系数，能够判断半导体材料的导电类型、载流子浓度及载流子迁移率等重要参数。

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We conclude that the extremum factor of the Hall coefficient is a good measure of the Hall characteristic, and it can be also used to determine the mobility ratio of carriers in semiconductors.

作者提出了采用霍尔极值因数来表征不同半导体材料的霍尔特性及测量载流子迁移率之比值的新方法。

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